Answer: A
First, You eliminate option B, because they all come in all shapes and sizes.
Second, You eliminate option C, as only asteroids are found in the asteroid belt, hence its name
Third, You eliminate option D. Not all asteroids are made out of ice; instead, they are made of rock.
Finally, you see that they all reflect light. It is impossible for comets, asteroids, and meteoroids to not reflect light; otherwise, how do we see them?